OOPSIE, whats that crack in the middle of the wall? O' is that a bonus stone which has broken away from the pack. The needed to go to the other side is written all over it's face. Go to the smart side - dry laid stone. A flexible and free draining system. Non of which can be said about this wall. To bad!
As you can see this beautiful wall may have a big problem (leaning over). One the builder never could have expected or planned. Simply human error on a hired contractor - over 36 +/- years later. ( estimated ) Yes this wall should or would still be standing tall - MOST LIKELY. Can you guess what went wrong. HINT- Water from the roof.
Current project Glenville, PA underway. More tales to tell coming up.
Built in 1969, with field stone from this historic site.
* True cause of failure only speculated. Water 100% the catalyst. Known as Hydraulic pressure.